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Fencer Vulns
critical 9.8

CVE-2018-25099 json

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

published 2024-03-18 2 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13851

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

In the CryptX module before 0.062 for Perl, gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag.

Patch / fix

  • dcit perl-cryptx 0.062
  • libcryptx-perl Debian 14, Debian 13, Debian 12 0.062-1

debian advisories DEBIAN-CVE-2018-25099

  • libcryptx-perl Ubuntu Pro 18.04 LTS 0.056-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2018-25099

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • perl-CryptX openSUSE Tumbleweed 0.80.0-3.1
  • perl-CryptX Package Hub 15 SP5, openSUSE Leap 15.5 0.80.0-bp155.2.3.1

opensuse advisories openSUSE-SU-2024:13866-1openSUSE-SU-2024:0112-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-25099 updated

libtomcrypt: gcm_decrypt_verify() and chacha20poly1305_decrypt_verify() do not verify the tag

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.48% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • dcit perl-cryptx

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.